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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0111-0100 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:12

%S 1,1,1,1,1,1,17,31,603,1111,11835,31735,783013,2381907,261886119,

%T 1041960181,168146324241,823285902521,171094649806295,

%U 1035545079698547,471550435880949163,3533719074119018679

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0111-0100 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.0.0.1.0

%e .1.1.0.0.0.0.1.1

%e .1.1.1.0.0.1.1.1

%e .1.0.0.0.0.0.0.1

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.1.1.1

%e .0.1.1.0.0.1.1.0

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008